油圧モータの低速安定性に関する研究 : 第4報,絞り弁制御のアキシアルピストンモータ

抄録

The low stability of throttle valve-throttle valve-controlled axial piston motors is investigated. The results obtained are compared with the results reported in the 3rd report, which dealt with pump-controlled axial piston motors. A comparison of low speed performance was made between meter-in and meter-out circuits. It is shown that the throttle valve control enhances the low speed stability compared to the pump control for the reason that the damping coefficient of an oil hydraulic motor system is increased by virtue of a throttle valve incorporated in the system. It is revealed that in the case of axial piston motors, the friction torque characteristics determine the difference of low speed performance between meter-in and meter-out circuits, and the the difference is small.